An endothermic reactions involves absorption in which energy is on the reactant side of the question or the left side. Exothermic involves the release of energy in which energy is on the product side of the equation.
 
        
             
        
        
        
1) the manipulative variable is the salt
2) the responding variable is how many purple eggs hatched
3) beaker A was the controlling variable
        
             
        
        
        
Answer:
Can you please put an image of the diagram 
Explanation:
 
        
                    
             
        
        
        
A. The car ahead of you is turning
        
                    
             
        
        
        
The clivage furrow forms, the chromosomes are on either side of the cell